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//------------------------------------------------------------------------------
/// \unit
/// !Purpose
/// 
/// SCSI commands implementation.
/// 
/// !Usage
/// 
/// -# After a CBW is received from host, use SBC_GetCommandInformation to check
///    if the command is supported, and get the command length and type
///    information before processing it.
/// -# Then SBC_ProcessCommand can be used to handle a valid command, to
///    perform the command operations.
/// -# SBC_UpdateSenseData is used to update the sense data that will be sent
///    to host.
//------------------------------------------------------------------------------

#ifndef SBCMETHODS_H
#define SBCMETHODS_H

//------------------------------------------------------------------------------
//         Headers
//------------------------------------------------------------------------------

#include "SBC.h"
// #include <nand/MSDLun.h>
#include "MSDDStateMachine.h"

//------------------------------------------------------------------------------
//      Definitions
//------------------------------------------------------------------------------

//------------------------------------------------------------------------------
/// \page "SBC Command States"
/// This page lists the possible states of a SBC command.
///
/// !States
/// - SBC_STATE_READ
/// - SBC_STATE_WAIT_READ
/// - SBC_STATE_WRITE
/// - SBC_STATE_WAIT_WRITE
/// - SBC_STATE_NEXT_BLOCK

/// Start of reading bulk data
#define SBC_STATE_READ                          0x01
/// Waiting for the bulk data reading complete
#define SBC_STATE_WAIT_READ                     0x02
/// Read error state
#define SBC_STATE_READ_ERROR                    0x03
/// Start next read block
#define SBC_STATE_NEXT_READ                     0x04
/// Start writing bulk data to host
#define SBC_STATE_WRITE                         0x05
/// Waiting for the bulk data sending complete
#define SBC_STATE_WAIT_WRITE                    0x06
/// Write error state
#define SBC_STATE_WRITE_ERROR                   0x07
/// Start next write block
#define SBC_STATE_NEXT_WRITE                    0x08
/// Start next command block
#define SBC_STATE_NEXT_BLOCK                    0x09
//------------------------------------------------------------------------------

//------------------------------------------------------------------------------
//      Exported functions
//------------------------------------------------------------------------------

void SBC_UpdateSenseData(SBCRequestSenseData *requestSenseData,
                         unsigned char senseKey,
                         unsigned char additionalSenseCode,
                         unsigned char additionalSenseCodeQualifier);

unsigned char SBC_GetCommandInformation(void          *command,
                               unsigned int  *length,
                               unsigned char *type,
                               MSDLun         *lun);

unsigned char SBC_ProcessCommand(MSDLun               *lun,
                                 MSDCommandState *commandState);

#endif //#ifndef SBCMETHODS_H

